TypeScript
TypeScript Source File
MIME type: application/typescript
TypeScript (.ts) files contain typed JavaScript code. TypeScript adds static type checking to JavaScript, catching bugs before they reach production. It compiles to standard JavaScript.
Advantages
- +Catches errors at compile time
- +Better IDE support (autocomplete, refactoring)
- +Makes large codebases manageable
- +100% compatible with JavaScript
Limitations
- -Requires compilation step
- -Learning curve for type system
- -Can add verbosity
- -Build configuration complexity
Common Use Cases
Technical Details
TypeScript is a superset of JavaScript that adds optional static typing. The TypeScript compiler (tsc) strips type annotations and outputs standard JavaScript. TypeScript supports interfaces, generics, enums, union types, and advanced type inference.
Frequently Asked Questions
What is TypeScript?
TypeScript is JavaScript with types. It adds static type checking to catch bugs before runtime and provides better IDE support. It compiles to standard JavaScript.
TypeScript vs JavaScript — which should I use?
Use TypeScript for large or team projects where type safety prevents bugs. Use JavaScript for small scripts, prototypes, or when simplicity matters.